摘要
利用Collins衍射积分公式对三维平顶高斯光束通过有中心遮拦的矩形环状光阑的传输特性进行了详细研究。对菲涅耳衍射和夫琅和费衍射的数值计算结果表明 ,遮拦比e和截断参数δ对其光强分布和远场能量 (功率 )集中度有影响。
The propagation properties of three-dimensional flattened Gaussian beams passing through a rectangular annular aperture with a central obscuration have been studied in detail using Collins diffraction integr al formula. Numerical calculation results of both Fresnel and Fraunhofer diffrac tions have shown the dependence of their intensity distributions and power (ener gy) focusability in the far-field on the obscure ratio e and truncation p arameter δ .
出处
《激光技术》
EI
CAS
CSCD
北大核心
2000年第4期256-258,F003,共4页
Laser Technology
基金
国家高技术惯性约束聚变主题资助
关键词
三维平顶高斯光束
环状光阑
传输特性
three-dimensional flattened Gauss ian beam annular aperture power(energy) focusability
